Abstract

CORZO, Otoniel; BRACHO, Nelson  and  RODRIGUEZ, Jaime. Prediction of moisture and salt contents of catfish slices during salting using different salting mixtures. Saber [online]. 2014, vol.26, n.3, pp.305-312. ISSN 1315-0162.

The objective of this study was to determine the applicability of the Weibull model to predict the moisture and salt contents and their diffusion coefficients, during the salting of catfish slices using mixtures of NaCl, KCl, CaCl² and MgCl². The effective water and salt diffusion coefficients (D_e) were determined using the normalized Weibull model. The high coefficients of determination (R² > 0.99) and low mean relative error (MRE< 10%) suggest that Weibull model is suitable and accurate for predicting both moisture and salt contents and determining De. Values of the scale parameter of Weibull model for fractional amount of moisture and salt contents ranged from 0.665 to 0.761 d and from 0.640 to 0.887 d, respectively; while values of shape parameter ranged from 0.467 to 0.669 and from 0.511 to 1.218, respectively. Values of De for water ranged approximately from 1.13 x 10-10 to 1.81 x 10^-10 m²/s while values for salt ranged from 0.63 x 10^-10 to 1.80 x 10-10 m²/s.

Keywords : Pseudoplatystoma; normalized Weibull model; salting pile; diffusion coefficient.

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